In A the original beginning of the bar was the following:
Chopin changed it then to the version offered by FE and EE:
The above correction was also included in GC, however, in this copy Chopin himself changed this place one more time; the new version was printed on this basis in GE1 (→GE2). We consider this version as definitive with one reservation: we add a 
lowering e2 to e
2, overlooked during the correction. The addition, not so obvious without knowledge of previous Chopin's corrections, was introduced only in GE3.
Compare the passage in the sources»
category imprint: Differences between sources; Corrections & alterations
issues: Corrections in A, Errors resulting from corrections, GE revisions, Authentic corrections in GC
notation: Pitch